CN103216213B - A kind of underground annular control valve - Google Patents
A kind of underground annular control valve Download PDFInfo
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- CN103216213B CN103216213B CN201310146487.XA CN201310146487A CN103216213B CN 103216213 B CN103216213 B CN 103216213B CN 201310146487 A CN201310146487 A CN 201310146487A CN 103216213 B CN103216213 B CN 103216213B
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Abstract
The invention discloses a kind of underground annular control valve, this valve is all metal construction, comprises valve body and valve rod, there is the second valve ball the lower end of valve rod, in valve body hypomere, be formed with fluid passage, has the second valve seat construction in fluid passage, valve body epimere there is bonnet, bonnet has metal liquid controling pipe line; The top of valve rod forms movable sealing by metal bellows and valve body, throw-out collar is arranged at the bottom of valve rod, baffle ring is had in the below of throw-out collar, between be clamped with the second stage clip, throw-out collar is connected with sliding sleeve, and the middle and lower part of sliding sleeve is expanding hole section, the annular space be communicated with fluid passage is formed between expanding hole section and valve rod, the sidewall cylindrical of expanding hole section is provided with sealing ring, and sidewall is provided with out head piece, goes out the top that head piece is positioned at sealing ring.The present invention can in thick oil thermal extraction flow string with packer with the use of, control to discharge the high pressure gas liquid in the following oil pipe of packer and casing annulus in oil well production string.
Description
Technical field
The present invention relates to a kind of downhole control valve, particularly relate to a kind of underground annular control valve.
Background technology
In the oil well production string of routine, packer is a kind of common well control instrument, plays sealing oil pipe and casing annulus in the manufacturing process of oil well.Along with the production of oil well, the gas-liquid pressure in oil pipe and casing annulus can raise gradually, affects the normal production of oil well.In order to the gas-liquid pressure in following for packer oil pipe and casing annulus is controlled in a reasonable pressure limit, need to connect a control valve at packer top.Conventional control valve is by hydraulic drive piston thus is with ovable valve stem and opens valve, and because the potted component in control valve is non-metal component, the sealing performance of potted component can lose efficacy in high temperature environments, causes control valve to use.
Summary of the invention
The present invention for solve in known technology the technical problem that exists and provide a kind of can with packer with the use of and the underground annular control valve of hot environment can be applicable to.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of underground annular control valve, this valve is all metal construction, the valve rod comprising valve body and install within it, described valve body comprises from top to bottom the valve body epimere that thread seal successively connects, valve body stage casing and valve body hypomere, the lower end of described valve rod is connected with the second valve ball, in described valve body hypomere, bottom is formed with fluid passage, the import of described fluid passage is formed in the bottom of described valve body hypomere, the outlet of described fluid passage is formed on the sidewall of described valve body hypomere, be formed in described fluid passage with described second valve ball adaptation and the second valve seat construction be positioned at above described second valve ball, the bonnet that be communicated with inner with it is connected with by thread seal in the upper end of described valve body epimere, described bonnet is sealed and installed with metal liquid controling pipe line, the position limiting structure of described valve rod is provided with in described bonnet, described position limiting structure comprises the first valve seat construction being formed in described valve body epimere top, spacer pin, first valve ball and the first stage clip, the lower end of described spacer pin and the upper-end contact of described valve rod, the upper end of described spacer pin contacts with described first valve ball, described first valve ball and described first valve seat construction adaptation, described first stage clip clamps between described first valve ball and described bonnet, the top of described valve rod forms movable sealing by metal bellows and described valve body epimere, the upper end of described metal bellows is connected with described valve rod, the lower end of described metal bellows is connected with the upper end in described valve body stage casing, the bottom of described valve rod has been threaded connection throw-out collar, the baffle ring be arranged on described valve body hypomere is provided with in the below of described throw-out collar, the second stage clip is clamped with between described throw-out collar and described baffle ring, described throw-out collar is provided with the section of stretching out of stretching out under described baffle ring, the described section of stretching out is connected with sliding sleeve, the middle and lower part of described sliding sleeve is expanding hole section, the annular space be communicated with described fluid passage is formed between described expanding hole section and described valve rod, the sidewall cylindrical of described expanding hole section is provided with sealing ring, the sidewall of described expanding hole section be provided with the outlet adaptation of described fluid passage go out head piece, described go out head piece be positioned at the top of described sealing ring,
When starting injection pressure, the after-contraction of described metal bellows pressurized, described valve rod is driven to move down, when described first valve ball move to match with described first valve seat locate time, described first valve ball and described first valve seat are formed and seal, when continuation injection pressure, during pressure increase, the sealing at described first valve ball and described first valve seat place cuts off pressure, makes described metal bellows bear elevated pressures.
Be provided with guard shield in the exit of described fluid passage, described guard shield is fixed on described valve body hypomere.
The advantage that the present invention has and good effect are: adopt hydraulic control mode, control valve entirety is all made of metal, in valve, static seal adopts metal sealing, adopts metal bellows to substitute moving sealing element, makes this control valve can be used in thick oil thermal extraction flow string; Shift sleeve structure is designed inside valve body fluid exit, can meet and the requirement that normal temperature high voltage tests envelope is carried out to packer, enable this control valve and packer with the use of, control to discharge the high pressure gas liquid in the following oil pipe of packer and casing annulus in oil well production string.Outside valve body gas outlet, design shield structure, erosion oil pipe or sleeve pipe when discharging gas-liquid flow velocity and being larger can be avoided.The present invention both can be suitable for the thick oil thermal extraction of high temperature, also went for the cold of routine and adopted well.The invention solves the problem that conventional downhole control valve can not be used for hot environment, improve the technical level of heavy crude heat extraction technique.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, metal liquid controling pipe line, 2, seal nipple assembly, 3, bonnet, the 4, first stage clip, 5, the first valve ball, 6, spacer pin, 7, valve rod, 8, metal bellows, 9, valve body epimere, 10, valve body stage casing, 11, throw-out collar, 12, the second stage clip, 13, baffle ring, 14, sliding sleeve, 15, sealing ring, 16, guard shield, 17, valve body hypomere, 18, the second valve ball, 19, go out head piece, 20, the outlet of fluid passage.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of underground annular control valve, this valve is all metal construction, comprises valve body and installs valve rod 7 within it, valve body comprise be threaded successively from top to bottom valve body epimere 9, valve body stage casing 10 and valve body hypomere 17,
The lower end of valve rod 7 is connected with the second valve ball 18, in valve body hypomere 17, bottom is formed with fluid passage, the import of fluid passage is formed in the bottom of valve body hypomere 17, the outlet 20 of fluid passage is formed on the sidewall of valve body hypomere 17, be formed in fluid passage with the second valve ball 18 adaptation and the second valve seat construction be positioned at above the second valve ball 18, the bonnet 3 that be communicated with inner with it is connected with by thread seal in the upper end of valve body epimere 9, bonnet 3 is sealed and installed with metal liquid controling pipe line 1, the position limiting structure of valve rod 7 is provided with in bonnet 3, position limiting structure comprises the first valve seat construction being formed in valve body epimere 9 top, spacer pin 6, first valve ball 5 and the first stage clip 4, the lower end of spacer pin 6 and the upper-end contact of valve rod 7, the upper end of spacer pin 6 contacts with the first valve ball 5, first valve ball 5 and the first valve seat construction adaptation, first stage clip 4 clamps between the first valve ball 5 and bonnet 3, the top of valve rod 7 forms movable sealing by metal bellows 8 and valve body epimere 9, the upper end of metal bellows 9 is connected with valve rod 7, the lower end of metal bellows 8 is connected with the upper end in valve body stage casing 10, the bottom of valve rod 7 has been threaded connection throw-out collar 11, the baffle ring 13 be arranged on valve body hypomere 17 is provided with in the below of throw-out collar 11, the second stage clip 12 is clamped with between throw-out collar 11 and baffle ring 13, throw-out collar 11 is provided with the section of stretching out of stretching out under baffle ring 13, the section of stretching out is connected with sliding sleeve 14, the middle and lower part of sliding sleeve 14 is expanding hole section, the annular space be communicated with fluid passage is formed between expanding hole section and valve rod 7, the sidewall cylindrical of expanding hole section is provided with sealing ring 15, the sidewall of expanding hole section be provided with outlet 20 adaptation of fluid passage go out head piece 19, go out the top that head piece 19 is positioned at sealing ring 15, when starting injection pressure, the after-contraction of metal bellows 8 pressurized, band ovable valve stem 7 moves down, when the first valve ball 5 move to match with the first valve seat construction locate time, the first valve ball 5 and the first valve seat construction are formed and seal, when continuation injection pressure, during pressure increase, the sealing at the first valve ball 5 and the first valve seat construction place cuts off pressure, makes metal bellows 8 bear elevated pressures, plays the effect of protection metal bellows 8.
In order to avoid erosion oil pipe or sleeve pipe when discharging gas-liquid flow velocity and being larger, be provided with guard shield 16 at outlet 20 place of fluid passage, guard shield 16 is fixed on valve body hypomere 17.
Operating principle of the present invention:
Before going into the well, will hydraulic oil be filled in bonnet 3 and valve body epimere 9 and be arranged on packer, then by seal nipple assembly 2, metal liquid controling pipe line 1 and bonnet 3 being tightly connected;
After packer setting, test envelope by predetermined pressure testing program to packer, test the all-of of sealing ring 15 after involution lattice, do not need to continue to keep sealing, control valve enters breakdown action program.
During unlatching, hydraulic oil is injected in bonnet 3 and valve body epimere 9 through molten metal pipeline 1, valve rod 7 compressed metal bellows 8 moving down under the effect of hydraulic oil, sliding sleeve 14 is driven to move down by throw-out collar 11, second valve ball 18 also moves down with valve rod 7 simultaneously, and the second valve ball 18 is separated with the second valve seat construction on valve body hypomere 17, and the head piece 19 that goes out on sliding sleeve is communicated with the outlet 20 of the fluid passage on valve body hypomere, fluid passage is opened, and downhole control valve is opened; In the process that valve rod 7 moves down, spacer pin 6 and the first valve ball 5 also move down thereupon, when control valve is opened into maximum, first valve ball coordinates in the effect of the first stage clip 4 with the first valve seat construction on valve body epimere and seals, elevated pressures divided and be interposed between beyond epimere valve body epimere, protection metal bellows 8 does not bear High Pressure;
During closedown, the hydraulic oil in release metal liquid controling pipe line 1, bonnet 3 and valve body epimere 9, valve rod 7, under the effect of the second stage clip 12, upwards resets, until the second valve ball 18 coordinates with the second valve seat construction on valve body hypomere and seals.
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (2)
1. a underground annular control valve, comprise valve body and install valve rod within it, it is characterized in that, this valve is all metal construction, and described valve body comprises from top to bottom valve body epimere that thread seal successively connects, valve body stage casing and valve body hypomere,
The lower end of described valve rod is connected with the second valve ball,
In described valve body hypomere, bottom is formed with fluid passage, the import of described fluid passage is formed in the bottom of described valve body hypomere, the outlet of described fluid passage is formed on the sidewall of described valve body hypomere, be formed in described fluid passage with described second valve ball adaptation and the second valve seat construction be positioned at above described second valve ball
Be connected with the bonnet that be communicated with inner with it in the upper end of described valve body epimere by thread seal, described bonnet be sealed and installed with metal liquid controling pipe line,
The position limiting structure of described valve rod is provided with in described bonnet, described position limiting structure comprises the first valve seat construction, spacer pin, the first valve ball and the first stage clip that are formed in described valve body epimere top, the lower end of described spacer pin and the upper-end contact of described valve rod, the upper end of described spacer pin contacts with described first valve ball, described first valve ball and described first valve seat construction adaptation, described first stage clip clamps between described first valve ball and described bonnet;
The top of described valve rod forms movable sealing by metal bellows and described valve body epimere, and the upper end of described metal bellows is connected with described valve rod, and the lower end of described metal bellows is connected with the upper end in described valve body stage casing,
The bottom of described valve rod has been threaded connection throw-out collar, is provided with the baffle ring be arranged on described valve body hypomere, is clamped with the second stage clip between described throw-out collar and described baffle ring in the below of described throw-out collar,
Described throw-out collar is provided with the section of stretching out of stretching out under described baffle ring, the described section of stretching out is connected with sliding sleeve, the middle and lower part of described sliding sleeve is expanding hole section, the annular space be communicated with described fluid passage is formed between described expanding hole section and described valve rod, the sidewall cylindrical of described expanding hole section is provided with sealing ring, the sidewall of described expanding hole section be provided with the outlet adaptation of described fluid passage go out head piece, described in go out the top that head piece is positioned at described sealing ring;
When starting injection pressure, the after-contraction of described metal bellows pressurized, described valve rod is driven to move down, when described first valve ball move to match with described first valve seat construction locate time, described first valve ball and described first valve seat construction are formed and seal, when continuation injection pressure, during pressure increase, the sealing at described first valve ball and described first valve seat construction place cuts off pressure, makes described metal bellows bear elevated pressures.
2. underground annular control valve according to claim 1, is characterized in that, is provided with guard shield in the exit of described fluid passage, and described guard shield is fixed on described valve body hypomere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146487.XA CN103216213B (en) | 2013-04-24 | 2013-04-24 | A kind of underground annular control valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310146487.XA CN103216213B (en) | 2013-04-24 | 2013-04-24 | A kind of underground annular control valve |
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| CN103216213A CN103216213A (en) | 2013-07-24 |
| CN103216213B true CN103216213B (en) | 2015-09-23 |
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| CN201310146487.XA Active CN103216213B (en) | 2013-04-24 | 2013-04-24 | A kind of underground annular control valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2733345C1 (en) * | 2020-04-14 | 2020-10-01 | Общество С Ограниченной Ответственностью "Оклэс Технолоджиз" | Downhole device for gas discharge |
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| CN103899277B (en) * | 2014-04-04 | 2016-09-14 | 哈尔滨工程大学 | The valve of bionic-type balance static pressure |
| CN104131800B (en) * | 2014-07-18 | 2016-07-27 | 中国海洋石油总公司 | Thermal production well annular space security control instrument |
| CN106639978A (en) * | 2016-12-13 | 2017-05-10 | 新疆熙泰石油装备有限公司 | Continuous adjustable oil nozzle valve |
| CN111236895B (en) * | 2020-02-24 | 2022-05-03 | 中国海洋石油集团有限公司 | Normally open type thermal recovery exhaust valve |
| CN111878036A (en) * | 2020-08-05 | 2020-11-03 | 中石化石油工程技术服务有限公司 | Multifunctional fluid one-way injection device and use method thereof |
| GB2605755B (en) * | 2021-02-25 | 2024-04-10 | Jb Valves Ltd | Valve Apparatus |
| CN115263235A (en) * | 2022-07-29 | 2022-11-01 | 北京博德世达石油技术股份有限公司 | All-metal high-temperature-resistant self-balancing air release valve |
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| Publication number | Publication date |
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| CN103216213A (en) | 2013-07-24 |
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Effective date of registration: 20161229 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Technology Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Technology Co., Ltd. |